以下是关于【长城和运河】的公开课/优质课视频，一共42个
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41:28135 -
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43:2430 -
15:4147 -
13:1092 -
06:0190 -
40:36119 -
42:0821 -
41:3393 -
42:0087 -
40:3692 -
19:19107 -
44:1537 -
39:5488 -
43:2485 -
28:1578 -
40:5486 -
38:5025 -
45:38100 -
49:5330 -
47:1745 -
37:1491 -
17:1363 -
41:4088 -
44:1597 -
45:1569 -
39:3946 -
39:4261 -
40:4363 -
40:28121 -
40:0658 -
43:08101 -
40:5447 -
18:2444 -
19:1954 -
42:5425 -
40:12103 -
40:5581 -
39:3335 -
46:2980 -
45:3124